Financing (Details) (USD $)						1 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014 Southern Company [Member]	Jun. 30, 2014 Alabama Power [Member]	Jun. 30, 2014 Georgia Power [Member]	Jun. 30, 2014 Gulf Power [Member]	May 31, 2014 Mississippi Power [Member]	Jan. 31, 2014 Mississippi Power [Member]	Jun. 30, 2014 Mississippi Power [Member]	Jun. 30, 2014 Southern Power [Member]	Jun. 30, 2014 Other Subsidiaries [Member]	Apr. 01, 2014 Debt Issuances [Member] Gulf Power [Member]	Apr. 01, 2014 Debt Redemptions [Member] Gulf Power [Member]
Line of Credit Facility [Line Items]
Long-term Pollution Control Bond											$ 29,075,000.000	$ 29,075,000.000
Bank Loans Period Of Extension						19 months	18 months
Credit arrangements by company
Expires, 2014	223,000,000	0	163,000,000	0	20,000,000			40,000,000	0	0
Expires, 2015	335,000,000	0	110,000,000	0	60,000,000			95,000,000	0	70,000,000
Expires, 2016	480,000,000	0	0	150,000,000	165,000,000			165,000,000	0	0
Line Of Credit Expire Year Four	30,000,000	0	0	0	30,000,000			0	0	0
Expires, 2018	4,130,000,000	1,000,000,000	1,030,000,000	1,600,000,000	0			0	500,000,000	0
Total	5,198,000,000	1,000,000,000	1,303,000,000	1,750,000,000	275,000,000			300,000,000	500,000,000	70,000,000
Unused	5,183,000,000	1,000,000,000	1,303,000,000	1,736,000,000	275,000,000			300,000,000	499,000,000	70,000,000
Executable Term-Loans, One Year	148,000,000	0	53,000,000	0	50,000,000			25,000,000	0	20,000,000
Executable Term-Loans, Two Years	40,000,000	0	0	0	0			40,000,000	0	0
Due Within One Year, Term Out	188,000,000	0	53,000,000	0	50,000,000			65,000,000	0	20,000,000
Due Within One Year, No Term Out	310,000,000	0	185,000,000	0	30,000,000			70,000,000	0	25,000,000
Debt Instrument, Description of Variable Rate Basis								P1M
Aggregate Principal Amount Of Floating Rate Bank Loan						$ 220,000,000	$ 250,000,000